EP2343179B1 - Ultraschall- und Laserschweißen in der Rohrsanierung - Google Patents

Ultraschall- und Laserschweißen in der Rohrsanierung Download PDF

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Publication number
EP2343179B1
EP2343179B1 EP10150505.5A EP10150505A EP2343179B1 EP 2343179 B1 EP2343179 B1 EP 2343179B1 EP 10150505 A EP10150505 A EP 10150505A EP 2343179 B1 EP2343179 B1 EP 2343179B1
Authority
EP
European Patent Office
Prior art keywords
tube
textile material
welding
webs
range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10150505.5A
Other languages
English (en)
French (fr)
Other versions
EP2343179A1 (de
Inventor
Carsten Otte
Gerhard Einhaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TWE Group GmbH
Original Assignee
TWE GROUP GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TWE GROUP GmbH filed Critical TWE GROUP GmbH
Priority to EP10150505.5A priority Critical patent/EP2343179B1/de
Priority to DK10150505.5T priority patent/DK2343179T3/da
Publication of EP2343179A1 publication Critical patent/EP2343179A1/de
Application granted granted Critical
Publication of EP2343179B1 publication Critical patent/EP2343179B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B29C66/72941—Non woven mats, e.g. felt coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1651—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being everted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B29C63/36—Lining or sheathing of internal surfaces using tubular layers or sheathings being turned inside out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
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    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • B29L2023/006—Flexible liners

Definitions

  • the invention relates to a method for producing a hose.
  • hoses made of nonwoven material for the rehabilitation of pipes are conventionally sewn from nonwoven webs into hoses and then used for the rehabilitation of pipes.
  • EP 0 844 065 A2 describes a method for producing a hose liner.
  • EP 1 935 618 A1 describes a laser-welded product.
  • US 2005/0041893 A1 describes a method for manufacturing a flexible container.
  • WO 96/36476 A1 describes methods of making tubular structures and the tubular structures themselves.
  • EP 0 997 259 A2 describes a method for the production of a hose liner.
  • the object of the present invention is therefore to provide a method for producing a nonwoven tube for pipe rehabilitation, in which tubes can be obtained with a high tensile strength at the seams, overall, the tubes can be made much faster and also the seam quality can be easily documented.
  • This object of the invention is achieved in a first embodiment by a method for producing a hose for the rehabilitation of pipes made of at least partially thermoplastic textile material, wherein the two outer edges of at least one web of at least partially thermoplastic textile material is welded by ultrasonic welding and / or laser welding, wherein one welds webs of the thermoplastic textile material in a thickness in a range of 3 to 12 mm and welding the webs of at least partially thermoplastic Textile material to a hose, the welding is performed so that an uninterrupted weld with a width in a range of 25 to 40 mm is formed.
  • a nonwoven material is used as the textile material in the process according to the invention.
  • the nonwoven may be laid, crimped, needled, hydroentangled and / or chemically entangled.
  • the nonwoven may for example also contain 0.1 to 80 wt .-% glass fibers for reinforcement.
  • These glass fibers may also contain the nonwoven in the form of a reinforcement fabric, for example.
  • it may be a needled felt with a reinforcing fabric, in particular a glass fiber reinforcing fabric.
  • the pore volume of the textile material according to the invention is advantageously in a range of 60 to 95%, in particular in a range of 70 to 90%.
  • the textile material may for example consist predominantly of thermoplastic material or of glass fiber reinforced plastic.
  • the textile material contains predominantly or consists of polypropylene, polyethylene, polyester and / or polyethylene terephthalate.
  • the weight per unit area of the at least partially thermoplastic textile material according to the invention is preferably in the range from 50 to 5000 g / m 2 .
  • the method according to the invention is carried out during the welding of the webs of the at least partially thermoplastic textile material to form a hose in such a way that an uninterrupted weld seam having a width in the range of 25 to 40 mm is produced. With the previous techniques for the production of textile tubes for the rehabilitation of pipes, it was not possible to achieve in the width according to the invention a conclusive and firm connection of the webs of the at least partially thermoplastic textile material.
  • Welds webs of at least partially thermoplastic textile material having a thickness in a range of 3 to 12 mm. Below this thickness range, the resulting hoses appear to be at least partially insufficient strength for rehabilitation measures in pipes and also to be statically less viable. Above this thickness, difficulties can arise in the everting of the tube into the tubes.
  • the total tube thickness can be, for example, in a range of 0.5 to 100 mm.
  • a hose with a diameter in the range from 50 to 3000 mm, in particular in a range from 150 to 1500 mm.
  • the temperature at the weld seam is preferably measured and the power of the laser and / or the ultrasound is automatically adjusted so that the temperature at the weld deviates from a preset desired value by at most 3%.
  • the at least partially thermoplastic textile material which on the later outside of the resulting tube has a coating of a material selected from polyurethane, polypropylene, polyethylene and / or polyvinyl chloride.
  • a coating of a material selected from polyurethane, polypropylene, polyethylene and / or polyvinyl chloride By means of this coating, damage to the textile material can largely be prevented during the refurbishment of the tube when it is being inserted into the tube. In addition, it leaves unhardened resin, with which you can soak the nonwoven material, in the hose.
  • this coating facilitates the everting of the tube into the tube with the aid of water or compressed air.
  • the thickness of the coating may be, for example, in a range of 100 to 2000 .mu.m, in particular in a range of 200 to 600 microns.
  • either the outer edges of the textile webs can be overlapped into a tube be welded.
  • seam outer strips and / or inner seam strips can also be provided on a butt joint of the two outer edges of the textile web, which in turn are then welded to the textile web.
  • an inner seam strip is welded onto the butt joint of the outer edges of the textile web.
  • a seam outer strip is then welded onto the butt joint of the outer edges of the textile web.
  • the process according to the invention is preferably carried out at a speed of welding in a range of 10 to 30 m per minute, in particular in a range of 15 to 25 m per minute.
  • This speed has been found to be optimal in order to achieve just the outstanding quality of the hoses and in particular the tensile strength and thereby achieve a much higher throughput of hose meters, than was possible with previously conventional methods.
  • a hose By means of the method according to the invention, a hose can be produced, which preferably has a weld seam with a width in the range of 5 to 50 mm.
  • the object underlying the invention is achieved by a method for the rehabilitation of pipes, wherein a tube is produced by the method according to the invention, impregnated with a not yet cured polymer, introduces into the pipe to be rehabilitated and then not yet Hardened cured polymer to obtain the rehabilitated pipe.
  • sewage pipes, fresh water pipes, drinking water pipes or gas pipes can be used in the process according to the invention.
  • the tube according to the invention can, for example, be round, angular, oval, provided with a mouth profile or with an egg profile.
  • the rehabilitated with the inventive method tube may for example be a steel pipe, a concrete pipe or plastic pipe.
  • the previously everted tube can be inserted with one end in the pipe to be rehabilitated and then, for example, with water pressure or air pressure in the pipe to be rehabilitated or alternatively be drawn into the pipe to be rehabilitated, for example by means of winds.
  • the uncured polymer is preferably selected from a polyester resin-based or epoxy resin-based polymer.
  • the second lane was similar, but ultrasonically welded.
  • the usual parameters were set in the ultrasonic welder.
  • the temperature was measured at the point of impact of the laser beam or the zone of action of the ultrasound and returned to the power control of the laser beam or the ultrasonic welder to always maintain a constant temperature 170 ° C (about 5 ° C above the melting point of Polypropylene).
  • a 40 mm wide outer seam strip of 150 ⁇ m thick PVC material such as the inner seam strip, was centered on the seam, now centered, centered on the seam and before being passed through two colliding press rolls with the same parameters as above , - in the case of one track with laser, in the case of the other track with ultrasound - welded.
  • the temperature at the weld was constantly measured and the power of the laser or ultrasound accordingly constantly regulated to the aforementioned temperature.
  • the tube was then impregnated with a non-cured polyester resin.
  • This tube thus obtained was then with the coating side outward around the circumference of a sawed vertical plastic tube, which was slightly larger than the diameter of the hose, spanned.
  • This first step was carried out so that now the tube according to the invention has spanned the tube with its uncoated side over a width of 10 cm of the end piece of the tube. Subsequently, a piece of the tube was pushed into the tube and filled the resulting pocket with water. Due to the resulting gravity, the remainder of the hose was drawn into the pipe so that the uncoated outside of the hose fit snugly against the inner wall of the pipe.

Description

  • Die Erfindung betrifft ein Verfahren zur Herstellung eines Schlauches.
  • Bislang werden Schläuche aus Vliesmaterial zur Sanierung von Rohren klassisch aus Vliesstoffbahnen zu Schläuchen vernäht und anschließend für die Sanierung von Rohren eingesetzt.
  • Solch ein Schlauch findet sich beispielsweise In der EP 1 872 049 B1 . Diese bislang bekannten Schläuche haben den Nachteil, dass sie zum einen keine sehr hohe Zugfestigkeit an den Nähten aufweisen und zum anderen die Qualität der Verbindung nicht zuverlässig für die gesamte Naht automatisiert dokumentiert werden kann. Bei der Sanierung von Rohren mit Hilfe von Vliesschläuchen werden diese Vliesschläuche nämlich in das Rohr hinein üblicherweise mit Hilfe von Wasserdruck und/oder Luftdruck umgestülpt. Dabei kann gerade an den Nähten des Schlauches eine hohe Zugbelastung entstehen, durch die die bislang eingesetzten Schläuche gerade an den Nähten oft gerissen sind. Zudem gab es bei den bisherigen normal vernähten Schläuchen einen erheblichen ökonomischen Nachteil, da das Vernähen der Schläuche langwierig und umständlich war.
  • EP 0 844 065 A2 beschreibt ein Verfahren zur Herstellung eines Schlauchliners.
  • DE 37 42 852 A1 beschreibt die Verwendung flexibler Halbzeuge aus faserverstärkten Kunststoffen zur Herstellung von Hohlkörpern.
  • US 4,478,661 beschreibt ein Verfahren zur Herstellung von verstärkten faltbaren Schläuchen.
  • EP 1 935 618 A1 beschreibt ein laserverschweißtes Erzeugnis.
  • US 2005/0041893 A1 beschreibt ein Verfahren zur Herstellung von einem flexiblen Behälter.
  • WO 96/36476 A1 beschreibt Verfahren zur Herstellung von rohrförmigen Gebilden und die rohrförmigen Gebilde selbst.
  • EP 0 997 259 A2 beschreibt ein Verfahren zur Herstellung von einem Schlauchliner.
  • Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren zur Herstellung eines Vliesschlauches zur Rohrsanierung bereitzustellen, bei dem Schläuche mit einer hohen Zugfestigkeit an den Nähten erhalten werden können, insgesamt die Schläuche wesentlich schneller hergestellt werden können und zudem die Nahtqualität leichter dokumentiert werden kann.
  • Diese der Erfindung zugrundeliegende Aufgabe wird In einer ersten Ausführungsform gelöst durch ein Verfahren zur Herstellung eines Schlauches zur Sanierung von Rohren aus zumindest teilweise thermoplastischem Textilmaterial, wobei man die beiden Außenkanten wenigstens einer Bahn eines zumindest teilweise thermoplastischen Textilmaterials mittels Ultraschallschweißen und/oder Laserschweißen verschweißt, wobei man Bahnen des thermoplastischen Textilmaterials in einer Dicke in einem Bereich von 3 bis 12 mm verschweißt und man bei der Verschweißung der Bahnen des zumindest teilweise thermoplastischen Textilmaterials zu einem Schlauch die verschweißung so durchführt, dass eine ununterbrochene Schweißnaht mit einer Breite in einem Bereich von 25 bis 40 mm entsteht.
  • Bei der Herstellung von Schläuchen aus Textilmaterial wurden Ultraschallschweißen und/oder Laserschweißen bislang nicht eingesetzt, da das klassische Vernähen der Vliesbahnen oder Textilbahnen ausgereicht hatte. Erst die extremen Belastungen, denen ein Textilschlauch bei der Rohrsanierung ausgesetzt ist, haben den technischen Nachteil der bisherigen Lösungen offenbart. Mittels Ultraschallschweißen und/oder Laserschwelßen lassen sich die Textilbahnen zuverlässig und mit einer hohen Zugfestigkeit zu einem Schlauch verschweißen, der dann auch ohne Einschränkungen in der Rohrsanierung eingesetzt werden kann. Zudem haben diese beiden erfindungsgemäßen Schweißverfahren den entscheidenden Vorteil, dass für jeden beliebig kleinen Längenabschnitt der Naht anhand der Parameter exakt nachvolizogen werden kann, wie gut die Qualität der Verbindung der Textilbahnen an der Naht ist. Auch dies war bislang bei der Vernähung der Textilbahnen nicht ohne weiteres möglich. Laserschweißen wurde bislang frontal durchgeführt. Dabei war bislang immer unter dem zu verschweißenden Material ein Reflektor notwendig. Es hat sich nun überraschend herausgestellt, dass beim erfindungsgemäßen Verfahren beispielsweise kein Reflektor notwendig ist, um dennoch gute Ergebnisse bei der Verschweißung zu erzielen.
  • Vorteilhafterweise setzt man bei dem erfindungsgemäßen Verfahren als Textilmaterial ein Vliesmaterial ein. Das Vlies kann beispielsweise gelegt, gekrämpelt, vernadelt, wasserstrahlverfestigt und/oder chemisch verfilzt sein. Das Vlies kann beispielsweise auch 0,1 bis 80 Gew.-% Glasfasern zur Verstärkung enthalten. Diese Glasfasern kann das Vlies auch beispielsweise in Form eines Verstärkungsgewebes enthalten. Insbesondere kann es sich um einen Nadelfilz mit einem Verstärkungsgewebe, insbesondere einem Glasfaser-Verstärkungsgewebe handeln. Durch den Einsatz eines Verstärkungsgewebes kann man eine Längsdehnung des Schlauches verhindern und gleichzeitig je nach Gewebe eine Dehnung im Umfang des Schlauches zulassen. Das Porenvolumen des erfindungsgemäßen Textilmaterials liegt vorteilhafterweise in einem Bereich von 60 bis 95 %, insbesondere in einem Bereich von 70 bis 90 %. Das Textilmaterial kann beispielsweise überwiegend aus thermoplastischem Material oder aus Glasfaser-verstärktem Kunststoff bestehen. Insbesondere enthält das Textilmaterial überwiegend oder besteht aus Polypropylen, Polyethylen, Polyester und/oder Polyethylenterephthalat.
  • Vorzugsweise liegt das Flächengewicht des erfindungsgemäßen zumindest teilweise thermoplastischen Textilmaterials in einem Bereich von 50 bis 5000 g/m2. Man führt das erfindungsgemäße Verfahren bei der Verschweißung der Bahnen des zumindest teilweise thermoplastischen Textilmaterials zu einem Schlauch so durch, dass eine ununterbrochene Schweißnaht mit einer Breite in einem Bereich von 25 bis 40 mm entsteht. Mit den bisherigen Techniken zur Herstellung von Textilschläuchen zur Sanierung von Rohren war es nicht möglich, in der erfindungsgemäßen Breite eine schlüssige und feste Verbindung der Bahnen des zumindest teilweise thermoplastischen Textilmaterials zu erzielen. Es hat sich herausgestellt, dass eine erstmals in dieser Breite mögliche Schweißnaht gerade bei der Sanierung von Rohren den erheblichen Vorteil hat, dass die entstehenden Schläuche eine wesentlich verbesserte Zugfestigkeit gegenüber bisher eingesetzten Textilschläuchen Im Nahtbereich aufweisen.
  • Man verschweißt Bahnen des zumindest teilweise thermoplastischen Textilmaterials mit einer Dicke in einem Bereich von 3 bis 12 mm. Unterhalb dieses Dickenbereiches scheinen die entstehenden Schläuche zumindest teilweise nicht ausreichende Festigkeit für Sanierungsmaßnahmen in Rohren aufzuweisen und zudem statisch weniger tragfähig zu sein. Oberhalb dieser Dicke kann es zu Schwierigkeiten der Umstülpung des Schlauches in die Rohre kommen.
  • Bei dem erfindungsgemäßen Verfahren verschweißt man vorzugsweise mehrere Bahnen des thermoplastischen Textilmaterials zu einem mehrlaglgen Schlauch. Die Gesamtschlauchstärke kann dabei beispielsweise in einem Bereich von 0,5 bis 100 mm liegen.
  • Bei dem erfindungsgemäßen Verfahren kann man beispielsweise einen Schlauch mit einem Durchmesser in einem Bereich von 50 bis 3000 mm, insbesondere in einem Bereich von 150 bis 1500 mm, herstellen.
  • Vorzugsweise misst man beim Verschweißen die Temperatur an der Schweißnaht und regelt die Leistung des Lasers und/oder des Ultraschalls so automatisch nach, dass die Temperatur an der Schweißnaht von einem voreingestellten Sollwert höchstens 3% abweicht. Durch diese erstmals beim erfindungsgemäßen Verfahren mögliche Rückkopplung von Produktionsparametern kann eine hohe Verbindungsqualität der Schweißnaht zum einen besser dokumentiert und zum anderen auch garantiert werden.
  • Bei dem erfindungsgemäßen Verfahren setzt man vorzugsweise Bahnen des zumindest teilweise thermoplastischen Textilmaterials ein, die auf der späteren Außenseite des entstehenden Schlauchs eine Beschichtung aus einem Material, ausgewählt aus Polyurethan, Polypropylen, Polyethylen und/oder Polyvinylchlorid aufweist. Durch diese Beschichtung kann zum einen bei der Einstülpung des Schlauches in das Rohr bei der Sanierung eine Beschädigung des Textilmaterials weitgehend verhindert werden. Zudem bleibt dadurch unausgehärtetes Harz, mit dem man das Vliesmaterial tränken kann, im Schlauch. Zum anderen erleichtert diese Beschichtung die Umstülpung des Schlauches in das Rohr hinein mit Hilfe von Wasser oder Druckluft. Die Dicke der Beschichtung kann dabei beispielsweise in einem Bereich von 100 bis 2000 µm, insbesondere in einem Bereich von 200 bis 600 µm liegen.
  • Bei dem erfindungsgemäßen Verfahren können entweder die Außenkanten der Textilbahnen durch Überlappen zu einem Schlauch verschweißt werden. Alternativ können auch auf eine Stoßfuge der beiden Außenkanten der Textilbahn Nahtaußenstreifen und/oder Nahtinnenstreifen vorgesehen werden, die dann wiederum mit der Textilbahn verschweißt werden. Vorzugsweise wird beim erfindungsgemäßen Verfahren in einem ersten Schritt ein Nahtinnenstreifen auf die Stoßfuge der Außenkanten der Textilbahn aufgeschweißt. In einem zweiten Schritt wird dann beispielsweise ein Nahtaußenstreifen auf die Stoßfuge der Außenkanten der Textilbahn aufgeschweißt.
  • Für das Laserschweißen und/oder Ultraschallschweißen können übliche Parameter zum Einsatz kommen.
  • Das erfindungsgemäße Verfahren wird vorzugsweise mit einer Geschwindigkeit der Verschweißung in einem Bereich von 10 bis 30 m pro Minute, insbesondere in einem Bereich von 15 bis 25 m pro Minute durchgeführt. Diese Geschwindigkeit hat sich als optimal herausgestellt, um gerade noch die hervorragende Qualität der Schläuche und insbesondere die Zugfestigkeit zu erreichen und dabei einen wesentlich höheren Durchsatz an Schlauchmetern zu erreichen, als dies bei bisher üblichen Verfahren möglich war.
  • Bei dem erfindungsgemäßen Verfahren werden vorzugsweise alle Prozessparameter genau archiviert, damit später im Unterschied zu bisherigen Verfahren die Produktqualität genau nachvollzogen werden kann.
  • Mittels des erfindungsgemäßen Verfahrens kann ein Schlauch hergestellt werden, der vorzugsweise eine Schweißnaht mit einer Breite in einem Bereich von 5 bis 50 mm aufweist.
  • In einer weiteren Ausführungsform wird die der Erfindung zugrundeliegende Aufgabe gelöst durch ein Verfahren zur Sanierung von Rohren, wobei man einen Schlauch mit dem erfindungsgemäßen Verfahren herstellt, diesen mit einem noch nicht ausgehärteten Polymer imprägniert, in das zu sanierende Rohr einbringt und daran anschließend das noch nicht ausgehärtete Polymer aushärtet, um das sanierte Rohr zu erhalten.
  • Beispielsweise können in dem erfindungsgemäßen Verfahren Abwasserrohre, Frischwasserrohre, Trinkwasserrohre oder Gasleitungen eingesetzt werden. Das erfindungsgemäß sanierte Rohr kann beispielsweise rund, eckig, oval, mit einem Maulprofil, oder mit einem Eiprofil versehen sein. Das mit dem erfindungsgemäßen Verfahren sanierte Rohr kann beispielsweise ein Stahlrohr, ein Betonrohr oder Kunststoffrohr sein. Bei dem erfindungsgemäßen Verfahren zur Sanierung von Rohren kann der zuvor umgestülpte Schlauch mit einem Ende in das zu sanierende Rohr eingeführt werden und dann beispielsweise mit Wasserdruck oder Luftdruck in das zu sanierende Rohr hineingestülpt werden oder alternativ in das zu sanierende Rohr beispielsweise mittels Winde eingezogen werden.
  • Das nicht ausgehärtete Polymer ist vorzugsweise ausgewählt aus einem Polymer auf Polyesterharzbasis oder Epoxyharzbasis.
    • Ausführungsbeispiel:
  • Zwei 2 m breite und 100 m lange Vliesbahnen aus einem Polypropylenvlies mit einer Dicke von 9 mm und einem Porenvolumen von 85 %, die auf der späteren Innenseite (zur Rohrmitte hin) des Schlauchs eine 300 µm starke Beschichtung aus Polyvinylchlorid aufwiesen, wurden in einem ersten Verfahrensschritt (dem Schlauchbandschweißen) unter der Stoßfuge der Ränder der Bahn mit einem 40 mm breiten Nahtinnenstreifen aus demselben Vliesmaterial verschweißt und anschließend mit Rollen verpresst. Dabei fand die Verschweißung bei einer Bahn durch einen 400 W starken Laserstrahl statt. Im Übrigen wurden übliche Parameter für das Laserschweißen eingestellt. Der Laserstrahl war direkt auf den Punkt der aufeinanderstoßenden Pressrollen fokussiert. Der Nahtinnenstreifen wurde zentriert an die Stoßfuge der Außenkanten der Textilbahn herangeführt.
  • Die zweite Bahn wurde ähnlich, jedoch mit Ultraschall verschweißt. Dabei wurden beim Ultraschallschweißgerät übliche Parameter eingestellt.
  • Bei der Verschweißung wurde die Temperatur an der Stelle des Auftreffens des Laserstrahls bzw. der Einwirkungszone des Ultraschalls gemessen und an die Leistungsregelung des Laserstrahls bzw. des Ultraschallschweißgeräts rückgemeldet, um immer eine konstante Temperatur 170 °C (etwa 5 °C über dem Schmelzpunkt von Polypropylen) zu erhalten. Anschließend wurde in einem zweiten Schritt des Dichtbandschweißens ein 40 mm breiter Nahtaußenstreifen aus 150 µm starken PVC-Material, wie der Nahtinnenstreifen auf den nun zusammengelegten Schlauch mit zentrierter Naht zentriert auf die Naht aufgelegt und vor dem Durchführen durch zwei aufeinandertreffende Pressrollen mit gleichen Parametern wie vorstehend, - im Fall der einen Bahn mit Laser, im Fall der anderen Bahn mit Ultraschall - verschweißt. Auch hier wurde die Temperatur an der Schweißstelle ständig gemessen und die Leistung des Lasers bzw. des Ultraschalls entsprechend ständig auf die vorgenannte Temperatur geregelt. Der Schlauch wurde nun mit einem nicht ausgehärteten Polyesterharz imprägniert.
  • Dieser so erhaltene Schlauch wurde anschließend mit der Beschichtungsseite nach außen um den Umfang eines abgesägten senkrecht stehenden Kunststoffrohres, das etwas größer war als der Durchmesser des Schlauches, herumgespannt. Dieser erste Schritt wurde so durchgeführt, dass nun der erfindungsgemäße Schlauch auf einer Breite von 10 cm des Endstücks des Rohres mit seiner unbeschichteten Seite das Rohr umspannt hat. Anschließend wurde ein Stück des Schlauches in das Rohr hineingestülpt und die so entstehende Tasche mit Wasser gefüllt. Durch die so entstehende Schwerkraft wurde der Rest des Schlauches so in das Rohr hineingezogen, dass die unbeschichtete Außenseite des Schlauches schlüssig an der Innenwand des Rohres anlag.
  • In dem nun vollständig mit Wasser gefüllten und mit dem Schlauch ausgekleideten Rohr wurde das Wasser nun soweit erhitzt, dass das bislang nicht ausgehärtete Polyesterharz ausgehärtet wurde. Das so behandelte Rohr war nun dauerhaft abgedichtet und damit saniert.

Claims (7)

  1. Verfahren zur Herstellung eines Schlauches zur Sanierung von Rohren aus zumindest teilweise thermoplastischem Textilmaterial, wobei man die beiden Außenkanten wenigstens einer Bahn eines zumindest teilweise thermoplastischen Textilmaterials mittels Ultraschallschweißen und/oder Laserschweißen verschweißt, wobei man Bahnen des thermoplastischen Textilmaterials in einer Dicke in einem Bereich von 3 bis 12 mm verschweißt und man bei der Verschweißung der Bahnen des zumindest teilweise thermoplastischen Textilmaterials zu einem Schlauch die Verschweißung so durchführt, dass eine ununterbrochene Schweißnaht mit einer Breite in einem Bereich von 25 bis 40 mm entsteht.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass man als Textilmaterial ein Vliesmaterial einsetzt.
  3. Verfahren gemäß einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass man mehrere Bahnen des zumindest teilweise thermoplastischen Textilmaterials zu einem mehrlagigen Schlauch verschweißt.
  4. Verfahren gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass man einen Schlauch mit einem Durchmesser In einem Bereich von 50 bis 3000 mm, insbesondere in einem Bereich von 150 bis 1500 mm herstellt.
  5. Verfahren gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass man beim Verschweißen die Temperatur an der Schweißnaht misst und die Leistung des Lasers und/oder des Ultraschalls so automatisch nachregelt, dass die Temperatur an der Schweißnaht von einem voreingestellten Sollwert höchstens 3% abweicht.
  6. Verfahren gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass man Bahnen des thermoplastischen Textilmaterials einsetzt, die auf der späteren Außenseite des entstehenden Schlauchs eine Beschichtung aus einem Material ausgewählt aus Polyurethan, Polypropylen, Polyethylen und/oder Polyvinylchlorid aufweist.
  7. Verfahren zur Sanierung von Rohren, dadurch gekennzeichnet, dass man einen Schlauch, hergestellt nach dem Verfahren gemäß einem der Ansprüche 1 bis 6, mit einem noch nicht ausgehärteten Polymer imprägniert, in das zu sanierende Rohr einbringt und daran anschließend das noch nicht ausgehärtete Polymer aushärtet, um das sanierte Rohr zu erhalten.
EP10150505.5A 2010-01-12 2010-01-12 Ultraschall- und Laserschweißen in der Rohrsanierung Not-in-force EP2343179B1 (de)

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DK10150505.5T DK2343179T3 (da) 2010-01-12 2010-01-12 Ultralyds- og lasersvejsning ved rørsanering

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EP2343179B1 true EP2343179B1 (de) 2014-11-12

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